code: def _comb(n, k):
      if k > n:
          return 0
      k = min(k, n - k)
      i = np.arange(1, k + 1)
      return np.prod((n + 1 - i) / i).astype(int)
  
imports: from functools import lru_cache
  import math
  import warnings
  import numpy
  from matplotlib import _api
label_desc: Use image node_id 1 for calling a global function with example usage: _comb(n, k) and returns: np, int